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| author | Bob Pearson <rpearsonhpe@gmail.com> | 2023-06-13 16:43:00 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-06-15 03:54:35 +0200 |
| commit | 91271699228bfc66f1bc8abc0327169dc156d854 (patch) | |
| tree | eaab3a79e74a77060b3ec49aa805010b23bf8561 /drivers/target | |
| parent | scsi: storvsc: Always set no_report_opcodes (diff) | |
| download | linux-91271699228bfc66f1bc8abc0327169dc156d854.tar.xz linux-91271699228bfc66f1bc8abc0327169dc156d854.zip | |
scsi: target: core: Fix error path in target_setup_session()
In the error exits in target_setup_session(), if a branch is taken to
free_sess: transport_free_session() may call to target_free_cmd_counter()
and then fall through to call target_free_cmd_counter() a second time.
This can, and does, sometimes cause seg faults since the data field in
cmd_cnt->refcnt has been freed in the first call.
Fix this problem by simply returning after the call to
transport_free_session(). The second call is redundant for those cases.
Fixes: 4edba7e4a8f3 ("scsi: target: Move cmd counter allocation")
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Link: https://lore.kernel.org/r/20230613144259.12890-1-rpearsonhpe@gmail.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/target_core_transport.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 86adff2a86ed..687adc9e086c 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -504,6 +504,8 @@ target_setup_session(struct se_portal_group *tpg, free_sess: transport_free_session(sess); + return ERR_PTR(rc); + free_cnt: target_free_cmd_counter(cmd_cnt); return ERR_PTR(rc); |